diff options
Diffstat (limited to 'net/sctp/outqueue.c')
| -rw-r--r-- | net/sctp/outqueue.c | 57 |
1 files changed, 34 insertions, 23 deletions
diff --git a/net/sctp/outqueue.c b/net/sctp/outqueue.c index d765fc53e74d..23e5e97aa617 100644 --- a/net/sctp/outqueue.c +++ b/net/sctp/outqueue.c @@ -406,8 +406,9 @@ void sctp_retransmit_mark(struct sctp_outq *q, * not be retransmitted */ if (!chunk->tsn_gap_acked) { - chunk->transport->flight_size -= - sctp_data_size(chunk); + if (chunk->transport) + chunk->transport->flight_size -= + sctp_data_size(chunk); q->outstanding_bytes -= sctp_data_size(chunk); q->asoc->peer.rwnd += (sctp_data_size(chunk) + sizeof(struct sk_buff)); @@ -422,16 +423,6 @@ void sctp_retransmit_mark(struct sctp_outq *q, if ((reason == SCTP_RTXR_FAST_RTX && (chunk->fast_retransmit == SCTP_NEED_FRTX)) || (reason != SCTP_RTXR_FAST_RTX && !chunk->tsn_gap_acked)) { - /* If this chunk was sent less then 1 rto ago, do not - * retransmit this chunk, but give the peer time - * to acknowlege it. Do this only when - * retransmitting due to T3 timeout. - */ - if (reason == SCTP_RTXR_T3_RTX && - time_before(jiffies, chunk->sent_at + - transport->last_rto)) - continue; - /* RFC 2960 6.2.1 Processing a Received SACK * * C) Any time a DATA chunk is marked for @@ -443,7 +434,8 @@ void sctp_retransmit_mark(struct sctp_outq *q, q->asoc->peer.rwnd += (sctp_data_size(chunk) + sizeof(struct sk_buff)); q->outstanding_bytes -= sctp_data_size(chunk); - transport->flight_size -= sctp_data_size(chunk); + if (chunk->transport) + transport->flight_size -= sctp_data_size(chunk); /* sctpimpguide-05 Section 2.8.2 * M5) If a T3-rtx timer expires, the @@ -1310,6 +1302,7 @@ static void sctp_check_transmitted(struct sctp_outq *q, __u32 rtt; __u8 restart_timer = 0; int bytes_acked = 0; + int migrate_bytes = 0; /* These state variables are for coherent debug output. --xguo */ @@ -1343,8 +1336,9 @@ static void sctp_check_transmitted(struct sctp_outq *q, * considering it as 'outstanding'. */ if (!tchunk->tsn_gap_acked) { - tchunk->transport->flight_size -= - sctp_data_size(tchunk); + if (tchunk->transport) + tchunk->transport->flight_size -= + sctp_data_size(tchunk); q->outstanding_bytes -= sctp_data_size(tchunk); } continue; @@ -1378,6 +1372,20 @@ static void sctp_check_transmitted(struct sctp_outq *q, rtt); } } + + /* If the chunk hasn't been marked as ACKED, + * mark it and account bytes_acked if the + * chunk had a valid transport (it will not + * have a transport if ASCONF had deleted it + * while DATA was outstanding). + */ + if (!tchunk->tsn_gap_acked) { + tchunk->tsn_gap_acked = 1; + bytes_acked += sctp_data_size(tchunk); + if (!tchunk->transport) + migrate_bytes += sctp_data_size(tchunk); + } + if (TSN_lte(tsn, sack_ctsn)) { /* RFC 2960 6.3.2 Retransmission Timer Rules * @@ -1391,8 +1399,6 @@ static void sctp_check_transmitted(struct sctp_outq *q, restart_timer = 1; if (!tchunk->tsn_gap_acked) { - tchunk->tsn_gap_acked = 1; - bytes_acked += sctp_data_size(tchunk); /* * SFR-CACC algorithm: * 2) If the SACK contains gap acks @@ -1432,10 +1438,6 @@ static void sctp_check_transmitted(struct sctp_outq *q, * older than that newly acknowledged DATA * chunk, are qualified as 'Stray DATA chunks'. */ - if (!tchunk->tsn_gap_acked) { - tchunk->tsn_gap_acked = 1; - bytes_acked += sctp_data_size(tchunk); - } list_add_tail(lchunk, &tlist); } @@ -1491,7 +1493,8 @@ static void sctp_check_transmitted(struct sctp_outq *q, tsn); tchunk->tsn_gap_acked = 0; - bytes_acked -= sctp_data_size(tchunk); + if (tchunk->transport) + bytes_acked -= sctp_data_size(tchunk); /* RFC 2960 6.3.2 Retransmission Timer Rules * @@ -1561,6 +1564,14 @@ static void sctp_check_transmitted(struct sctp_outq *q, #endif /* SCTP_DEBUG */ if (transport) { if (bytes_acked) { + /* We may have counted DATA that was migrated + * to this transport due to DEL-IP operation. + * Subtract those bytes, since the were never + * send on this transport and shouldn't be + * credited to this transport. + */ + bytes_acked -= migrate_bytes; + /* 8.2. When an outstanding TSN is acknowledged, * the endpoint shall clear the error counter of * the destination transport address to which the @@ -1589,7 +1600,7 @@ static void sctp_check_transmitted(struct sctp_outq *q, transport->flight_size -= bytes_acked; if (transport->flight_size == 0) transport->partial_bytes_acked = 0; - q->outstanding_bytes -= bytes_acked; + q->outstanding_bytes -= bytes_acked + migrate_bytes; } else { /* RFC 2960 6.1, sctpimpguide-06 2.15.2 * When a sender is doing zero window probing, it |